Sole-channeling machine



May 15, 1923.

F. E. BERTRAND SOLE CHANNELING MACHINE I Filed June '7 1919 3 Sheets-Sheet 1 3 Sheets-Sheet 2 'F. E BERTRAND SOLE CHANNELING MACHINE Mary 15, 1923.

May 15, 1923.

\ 1,454,880 F. E. BERTRAND sou: CHANNELING MACHINE Filed June '7, 1919 3 Sheets-Sheet 5 Patented May 15, 1923.

ranso- FB/EPERIG E. BERTRANI), 0F LYNN, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MACHINERY CORPORATION, OF PATERS ON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

Application filed June 7,

chines and more particularly to such machines for channeling soles for use in the manufacture of turn boots and shoes.

The prevailing style in shoemaking at the present time demands: the use of lasts having extremely pointed toes and this style isespecially prevalent in turn shoes. To build a shoe on these narrow toed lasts it is necessary to shape the sole with a much more pointed toe than has generally been in use, such soles being known to the trade as peaked-toe soles. Much difficulty has been experienced in inseaming the shoes in which these soles are incorporated due to the fact that the operator of the inseaming machine is not permitted, by reason of the narrow space at the extreme point of-the toe, to sew downthe advance side of the toe with stitches that are inserted, as they should be, at right angles to the line of feed. Consequently, in order to give more room for the strokes of the awl and the needle the shoe is swung somewhat before it should be. As a result the stitches are distorted and the between substance weakened to such an extent that the shoe rips at the toe, frequently before its completion, causing a cripple. This is particularly true in making turn shoes. In this type of shoe the step of turning it right side out, placesasevere strain on the inseam at the toe, which if it is not well made will The object of the present invention is to produce a sole which can be incorporated in shoes of the prevailing pointed toe style and securely fastened to the upper about the too, thus avoiding the production of cripples from the cause hereinbe fore alluded to.

In accordance with this, object a feature of the invention comprises the provision of means in a sole fitting machine which will SOLE-CHANNELING MACHINE.

1919. Serial No. 392,576.

requisite along the shank and sides of the fore part. Such a shoulder at the toe will give a sufficient backing to the uppermaterials to permit of stapling the upper to the sole about the toe; it being the purpose of this invention to produce a sole which will permit of an elimination of theusual sewed inseam at the toe thus effectually preventing the production of a cripple by an insecure inseam at this part of the shoe. Accord ingly the sole fitting, or channeling, machine is provided with tools which will produce on the sole the usual edge fitting, i. e., a shoulder for turn sole and womens welt insole work, along the shank and sides of the fore part, and a lip about the end of the toe which, when raised, affords the highershoul der required for the stapling operation.

Preferably the machine willbe provided with two edge knives, one for slitting the edge to form a lip, and the other for cutting a shoulder, both operating on the same portion of the sole, i. e., the margin outside the between substance, the lip knife being in advance of the shoulder knife, so thatwhile both are in operative position a shoulder alone is produced. Provision is made for raising the shoulder knife on approaching the toe on one side and then dropping it in position again after roundingthe toe, thus producing a lip alone about'the toe.

To the accomplishment of this object and such others as may hereinafterappear, as will be readily understood by those skilled in the art, the invention comprises the features and combinations of parts hereinafter dfescribed and particularly pointed out in the appended claims.

In the accompanying drawings showing the, preferred form of the invention, Figure 1 is a rear elevation of a Goodyear Universal channeling machine (turn work) fitted with the new knives for producing a lip at the toe of a shouldered sole. In this view both the shoulder and edge slitting knives are shown in operative position, their combined operation [forming a shoulder; Fig. 2} is an enlarged detail of the operating tools and connecting parts showing the shoulder knife raised and a lip alone being formed; 3 is a plan, partly in section, of the parts shown in Fig. 2; Fig. 4; is an end elevation showing the edge knives both in operative position, the operating instrumentalities being shown in the, relative positions assumed just prior to starting a feed stroke.- In this view the channel knife block with its knife is removed; Fig. 5 is an exploded view, in perspective, of the knife block which carries the edge slitting and shoulder knives; and Fig. 6 is a View, in perspective, of the toe end of a sole pro- .duced by the machine.

The illustrated embodiment of the invention shows the present commercial Goodyear Universal channeling machine for making turn soles, except in the particulars described in detail hereinafter, the head frame 10 of which supports the work engaging instrumentalities. These include a work support 12, above which is mounted the oscillating knife carrier 14 driven by connections, including a link 16 (Fig. 4:), between said carrier and an eccentric 17 on the main shaft 18, which is rotated by a belt running over the pulley 20. Within the oscillating carrier 14: are the vertically yielding slides 22 and 24; for the edge knife and channel knife respectively, these two slides being held downward by the springs shown within the head 26 in Fig. 1. Also supported by the oscillating carrier is a way carrying the slide 28, to which is connected the downwardly projecting arm 80 having secured to its lower end the edge pressure gage 82. The gage 32 is held yieldingly downward by a spring 34. The channel knife slide 24 is provided with a portion 36 (Fig. i) at its lower end which projects outwardly from the oscillating carrier and supports the channel knife pressure gage 4:0. When the work is fed across the worktable 12, the oscillating carrier moves the sole forward on its forward stroke by the pressure of the gages 32 and 40 upon it, but the sole is held from movement on the rearward stroke of the carrier by means of the presser foot 42 sustained at the lower end of a spring pressed carrier er and given a vertically reciprocatory movement by suitable connections with an eccentric &6 on the forward end of the shaft 18.

All of the parts thus far described, with the exception of the particular shape of the edge pressure gage arm 30 and of the channel knife carrier 38, may be, and preferably are the same as illustrated 'and described in the present inventors prior Letters Patent of the United States Nos. 1,030,704: and

1,030,710, both dated June 25, 1912.

The arm 30 which sustains the edge pressure gage 32 is of the formation illustrated in Figs. 2 and 1, rather than as shown in said prior patents, because of the new construction and arrangement of the edge knife block to be hereinafter described. The channel knife carrier 38, it will be observed, is so formed as to support a channel knife 4C8 so shaped that in order to perform its function it must be positioned with its shank arranged vertically with respect to the plane of the work table instead of obliquely thereto as illustrated in said prior patents. The purpose of this shape of channel knife is more particularly for peaked-toe work, since it has been found that the obliquely arranged knife interferes with the turning at the toe on soles of this style because of the small amount of room at the toe allowed by the rapidly converging sides of the sole. The vertical shank on the channel knife and the simplified holder therefor, as will be recognized by those skilled in the art, permit an easy turning of the peaked-toe soleswithout interference. This change forms no part of the presentinvention.

The work table 12 is lowered in order to insert and remove the work by means of 'a treadle connected to the treadle rod 50, a depression of which first breaks the toggle 52 and then lowers the table. It is desirable that the channel knife i8 be elevated at the same time the table is lowered, and there fore the toggle 52 is connected by an arm 53, bell crank 5 f mounted on a pivot pin 55, and intermediate links 56 and 57 to a horizontal arm 58 loosely pivoted on the rock-shaft 60 at the top of the head frame 10. The arm 58 carries a screw 59 which bears upon a lever (ll, also loosely mounted upon said rock-shaft 60 and extending under a pin 62 projecting laterally from the slide as which carries the channel knife. An inspection of Fig. 1 will show that through these connections the lowering of the work table will simultaneously raise the channel knife. On releasing the treadle these parts are returned to their operative positions by springs provided for this pur pose.

The feature just described is fully illustrated and claimed in the inventors prior Letters Patent of the United States No. 1,023,801, dated April 23, 1912, but the pivot pin 55 and the rockshaft 60 are employed in the novel mechanism now to be described.

The instrumentalities for operating on the margin of the sole opposite the channel knife and outside the between substance are not shown, in the combination herein illustrated, in any *of the prior patents. The edge knife block in sa-id prior patents referred to, is mounted upon the lower end of the edge knife slide 22, but itismade in two parts 6t and 66 as shown best in Fig. 5 which support a shoulder knife and an edgeslitting These two parts, al-- knife respectively. though separable, are removable from the machine as an entirety. The parts 66 is provided with a vertical channel which embraces the lower end of the slide 22 and oppositethis channel it has a tongue whichfits into a ,complernentalrecess in the part 64 (see'Fig. 5), the part 64 being provided with a guide pin 65which projects into'a hole in the part 66 and thus determines the proper relation of the two parts when they are brought together. Elongated bolt holes 67 and 68 are provided in the parts64pand 66 respectively, and the two partswhen as= sembled together are held onthe slide 22 by a bolt 69 passed through the holes and threaded into the slide. The vertical position of the edge knife block is determined by thevertical position of the adjusting screw 70, thehead'of which engages a slot 71 in the part 64 .upon the same principle as is disclosed in the inventors prior Letters Patent r the Unitedl States N 1,030,703, dated June 25, 1912."

The edge knife block is made in two parts. so that -it may be provided withholders for through a lug on the part 64 and thelower endof which bears against the upper side of the central portion of a lever 88 one end of which is pivoted on the part 64.

The lever SSisprovided with an inwardly projecting pin 90 which passes through a vertically elongated hole 91 in the part'64 and into a horizontally elongated hole v92 in the shoulder knife holder slide 78. When the slide 78 is in its lower position, the lever 88 rests upon an adjustable screw 94 (Fig. 1) the position of which controls the. vertical relation of the .twoknives to each othel'and which ismanipulated as may be required to properly maintain this relation,

The vertical within the 'part,64 of the edge knife block is under control of the operator. The lever 88 is-provided on its free end with a head 96 whichoverlies the freeend of a vertically movable lever arm ,98 pivoted at its other end lupolrthe pivot pin..55. Alink 100 connects thearn1 98 with one end of a substantially parallel lever arm 10Q, the other end of which is fixed to the rear. end

i of the rock-shaft60. At the front of the machine the forwardend of the ro ckfshaft 60 has another leverfarm 104 secured thereto, and a depending link106 connects this movement of theslide 78- lever arm to an operating handle 108 loosely pivoted upon a horizontal pin 110 carried by a bracketfl112 secured to the head frame 10. The lever arm 104 is held lifted by means of an expansion spring 114, atthe front of the machine, located between the under side of the lever and a lug 115 projecting from the head frame 10,and sur rounding a rod 116, which passes through both the lever armandj the lug andis secured in position by suitable nuts; 'A' suit-' ableadjustment of the rod 116 acts to main tain thefree end of the lever 98 a short distance below the head 96 of the lever 88. and thus provides the clearance necessitated be cause of the arcuate movement imparted to the head96 by the oscillating knife carrier 14.

In operating the machine the table is lowcred and the sole entered, its edge resting against .the usual edge gage 118 (Fig. l)

and at this time the slide. 78 which carries the shoulder knife 82 is in its lower position locating this knife just in the rear of the edge slitting knife 74, so that when the cutting edge 75 of the knife 74 makes its edge slit as the sole is fed throughthe machine, the feather cutting edge 81 on the shoulder knife 82 will follow in exactly the same horizontal plane. The end of the shoulder knife cutting edge 81 is in aline Inent with'the' end of the, slittingknife cutting. edge75, but theblade on whichuth'e edge 81 is formed extends above the blade i of the slitting knife, the angle between" these two blades being about twodegree's. This prevents the shoulder knife from digging inand spoiling the margin, the feather being formed by the slitting knife alone; The shoulder knife '82'has one peculiarity extends forwardly of the feather cutting vover the usual shoulder knives in that it; has a distinctshoulder forming blade which edge"81.; This blade is provided with a shoulder cutting edge 83 in advance of-its feather-cutting edge and located adjacent the end of the'edge slitting-knife 74. The

cdge 88 projects forwardly and'upwardly from the outer end of the edge 81 and functions to hold down the sole as the string issevered, thus producing a sharply defined shoulder. 1 (See Fig. 4);

Now then, on the sole being fed through the machine from the 'shank toward'fthe toe, the channel knife'48 performs its usual functionand the knives 74 and 82 act to gether to first form an edge lip andthen out away the lip thus produced, leaving the usualshoulder required on turn soles, and

on welt insoles for womens work (see Figq- 1).. At about one and one-half inches'in the rear'of the tipof the toe,' however, or;

about opposite what would 'beth'eend of assembled, the operating handle-1081s de the tip line of the uppenwhen'th'e shoe -is 'l" 0 pressed. This raises the lever arm 98 which, by engaging the head 96 of the lever 88, elevates this latter lever and with it the slide 78 which carries the shoulder knife This vertical movement of the shoulder knife relative to the edge slitting knife 74 causes its feather cutting edge 81 to cut transversely through the string which has been formed by the action of the two knives and wholly sever it from the margin of the sole (see Fig. 2). The shoulder knife 82 now being in the position shown in Fig. 2, it can perform no operation upon the sole until again lowered into its former position. Therefore, so'long as the operator main= tains the operating handle 108 depressed, a. lip, instead of a shoulder, will be. produced on the margin of the sole parallel to the channel made by the knife 48. But after the toe has been swung and the knives are traveling toward the shank on the second side of the sole, the shoulder knife 82, by releasing the handle 108, is again dropped into position when opposite the point where it was removed. On its downward stroke tile edge 81 cuts transversely through the lip formed by the knife 74 and thereafter the two knives roduce a marginal shoulder as before instead of a lip. The result of the operations just described is shown by Fig. 6.

Especial attention is called to the means employed for adjusting the wear gib 120 in the way 76 (F As best shown in Fig. .3 the outer side of this gib is engaged by cone shaped heads 121 on adjusting bolts 122 which are seated in suitably shaped recesses formed therefor in the inner face of the edge knife block, part 641. As the gib wears it is adjusted by tightening the nuts on the bolts 122 thus drawing the head 121 forward and wedg'ing the gib 120 inward. With this construction the adjusting screws are in a readily accessible position at the rear of the machine as shown in Figs. 2 and 3.

While it is preferred to employ the specific construction and arrangement of the parts shown and described, since this construction and arrangement is the simplest and most efficient embodiment of the inven tion which has yet been devised, it will be understood that this construction and arrangement is not essential except so far as it is specified in the claims, and may be varied or modified without departing from the broader features of the invention.

What is claimed as new, is

1. A sole channeling machine having, in combination, work supporting and feeding means, and means for forming a shoulder along a portion of the edge of the sole and a lip in continuation thereof along another portion of said edge.

2. A solechanneling machine having, in

combination, means for forming a marginal channel in the sole, and means for forming a shoulder parallel to a portion of said channel and a lip parallel to another portion of said channel.

3. A sole channeling machine having, in combination, a knife for slitting horizontally the edge of a sole, a knife to co-operate therewith by removing a string of waste to form a shoulder on the edge, both operating upon the marginal portion of the shank, and means for withdrawing one of said knives from operative position at the will of the operator.

4:. A stock-treating machine having, in combination, a channel knife, an edge knife and a shoulder knife, said edge and shoulder knives operating on the same portion of the stock, the former in advance of the latter.

5. A. stock-treating machine having, in combination, a work support at one side of the stock, a knife for slitting the edge of the stock, a cutter to co-operate in removing waste stock to form a shoulder and operating at the other side of the stock, and means for moving the cutter away fromthe work v support during the operation of the machine while the edge slitting knife remains in operative position.

6. A sole channeling machine having, in combination, an edge slitting knife to form a lip, a lmife in the rear of said edge knife having an edge to sever the lip from its attachment to the sole and an edge to sever the string thus produced, and means to move said knife in a direction to sever said string.

7. A sole channeling machine having, in combination, cutting means for forming a channel, and simultaneously acting cutting means constructed and arranged to form an edge cut producing a shoulder in part and i a lip in part.

8. In a sole channeling machine an edge cutter comprising co-operating cutting parts and means relatively to move them to produce a shoulder at the shank and sides of the fore-part and a lip about the toe of a sole.

9. In a channeling machine, a channel knife, a knife for removing a strip of waste to form a shoulder and a knife to slit the edge of a piece of work to form a lip, said ast two knives being opposite the channel knife and being arranged to be used alternatively.

10. In a sole channeling machine, a lip slitting knife and a shoulder knife, the former in advance of the latter, and means for discontinuing the operation of the shoulder knife while the lip slitting knife remains in operation. v

11. A sole channeling machine having, in combination, a channeling knife, an edge slitting knife and a shoulder knife, said last two knives being opposite the channeling knife and so constructed and arranged that while the slitting knife is in advance of the shoulder knife the shoulder cutting edge of the latter is at the end of the slitting edge of the former.

12. In a sole channeling machine, an edge knife block containing two separable parts,

one of which is provided with a fixed edge slitting knife holder and the other of which is provided with a vertically movable shoulder knife holder.

13. In a sole channeling machine, an edge knife block provided with two holders for an edge slitting and shoulder knife, the latter knife being at the heel of the former and having its, shoulder forming blade extending forwardly across the end of the former.

14. In a sole channeling machine, a shoulder knife having distinct feather forming and shoulder forming blades, the latter blade extending forwardly in advance of the cutting edge of the former blade.

15. In a sole channeling machine, a'shoulder knife having its shoulder cutting edge in advance of its feather cutting edge, said shoulder cutting edge projecting forwardly and upwardly from the end of'said feather cutting edge.

FREDERIO E. BERTRAND. i 

